Two-dimensional arrays of strings of TiO2 nanoparticles via cooperative block copolymer self-assembly

Juan Peng, Wolfgang Knoll, Cheolmin Park, Dong Ha Kim

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

An unprecedented path to synthesize 2D arrays of strings of titanium dioxide (TiO2) nanoparticles was developed from cooperative self-assembly of poly(styrene-block-2-vinyl pyridine (Ps-b-P2VP) copolymer and titanium tetra-isopropoxide (TTIP)-based sol-gel precursors. Hybrid block copolymer (BCP)/titania thin films with nanohole and nanonetwork morphologies, depending on the relative composition of the mixed solution, were obtained by one-step spin coating of the mixed solution on silicon wafers. TiO2 moieties merged form spherical nanoparticles where nanoholes were present at the center of individual nanoparticles. Experimental investigation suggested a rare scheme to induce 2D arrays of strings of TiO2 nanoparticles based on cooperative BCP self-assembly that can be extended to obtain a wide range of inorganic nanostructures with tailored composition, size, and shape.

Original languageEnglish
Pages (from-to)1200-1202
Number of pages3
JournalChemistry of Materials
Volume20
Issue number4
DOIs
Publication statusPublished - 2008 Feb 26

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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